Maytag JUC2450ARS Operations Instructions download pdf (Page 10)

Component Testing

WARNING

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test

procedures require power to be connected. Discharge capacitor through a resistor before attempting to service.

Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Component Description Test Procedures

PTC Relay

When voltage is connected and relay is

cool, current passes through relay to

start winding.

After a short time, current heats the

resistor in relay and resistance will rise

blocking current flow through relay.

Start winding remains in the circuit

through run capacitor.

Solid state relay plugs directly on

compressor start and run terminals. Relay

terminals 2 and 3 are connected within

relay. Run capacitor is connected to relay

terminal 3. L2 side of 120 VAC power is

connected to relay terminal 2.

1. Disconnect power to the refrigerator.

2. Remove relay cover and disconnect leads.

3. Check resistance across terminals 2 and 3 with an ohmmeter:

Normal = 3 to 12 ohms

Shorted = 0 ohms

Open = infinite ohms

(SSAC) Electronic

control

Electronic control that uses a thermistor to

sense temperature of cabinet and

rheostat to adjust temperature.

1. Check resistance of thermistor before replacing Electronic control.

2. If resistance of thermistor is good replace Electronic control

Condenser motor

Condenser fan moves cooling air across

condenser coil and compressor body.

Condenser fan motor is in parallel circuit

with compressor.

Check resistance across coil.

Cabinet light

switch

Single pole, single throw switch

completes circuit for light when door is

open.

Check resistant across terminals.

Switch arm depressed

“NO” terminals Open

Switch arm up

“NO” terminals Closed

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Maytag JUC2450ARS Operations Instructions Page 10

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